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From: tve@cernvax.UUCP (Th.v.Eicken)
Newsgroups: net.micro.amiga
Subject: Loading external RAM from disk
Message-ID: <282@cernvax.UUCP>
Date: Sun, 2-Mar-86 08:58:10 EST
Article-I.D.: cernvax.282
Posted: Sun Mar  2 08:58:10 1986
Date-Received: Tue, 4-Mar-86 03:17:15 EST
Reply-To: tve@cernvax.UUCP (Th.v.Eicken)
Organization: CERN, Geneva/Switzerland
Lines: 20


   The other day I wondered how a program could be efficiently loaded into
expansion RAM. Remember the custom chips can only access the internal 512K
and disk DMA is handled by one of these chips.

   If I interpret this correctly, to load a program or data into  external
memory  requires  it  to be first put into internal RAM and then copied by
the 68000 (!) into external RAM.

   Should this be correct, a 68010 would really be worth  it  as  soon  as
external RAM is added.

   Did I overlook anything ?
					   Thorsten von Eicken
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 Thorsten von Eicken         tve@cernvax.UUCP
 Div. EP                     ...!seismo!mcvax!cernvax!tve
 CERN Geneva
 Switzerland
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